Pu Zhaoxia, You Xiangdong, Xu Qiyuan, Gao Feng, Xie Xiaojie, Zhang Hong, Jian'an Wang
Department of Ultrasound, Second Affiliated Hospital, Zhejiang University College of Medicine, 88 Jiefang Road, Hangzhou 310009, China.
J Biomed Biotechnol. 2011;2011:839653. doi: 10.1155/2011/839653. Epub 2011 May 19.
Ultrasound-targeted microbubble destruction (UTMD) has been proposed as a new technique for organ-specific gene transfer and drug delivery. This study was performed to investigate the effect of UTMD on marrow mesenchymal stem cells (MSCs) transfected with pcDNA3.1⁻-hVEGF₁₆₅.pcDNA3.1⁻-hVEGF₁₆₅ were transfected into the third passage of MSCs, with or without UTMD under different ultrasound conditions. Protein expression was quantified by hVEGF₁₆₅-ELISA kit after transfection for 24, 48, and 72 hours. UTMD-mediated transfection of MSCs yielded a significant protein expression. UTMD of mechanic index (MI) 0.6 for 90 seconds led to the highest level of protein expression.
超声靶向微泡破坏(UTMD)已被提出作为一种用于器官特异性基因转移和药物递送的新技术。本研究旨在探讨UTMD对转染了pcDNA3.1⁻-hVEGF₁₆₅的骨髓间充质干细胞(MSC)的影响。将pcDNA3.1⁻-hVEGF₁₆₅转染至第三代MSC中,在不同超声条件下进行或不进行UTMD处理。转染24、48和72小时后,使用hVEGF₁₆₅-ELISA试剂盒对蛋白表达进行定量。UTMD介导的MSC转染产生了显著的蛋白表达。机械指数(MI)为0.6持续90秒的UTMD导致了最高水平的蛋白表达。